Tugas Jarkom 3

Joanna Herpiani (11108079), 3ka15

Building a Switch-based Network

Background / Preparation

This lab focuses on the ability to connect two PCs to create a simple switch-based Ethernet LAN

using two workstations. A switch is a networking concentration device sometimes referred to as a

multiport bridge. Switches are relatively inexpensive and easy to install. When operating in fullduplex

mode, they provide dedicated bandwidth to workstations. Switches eliminate collisions by

creating microsegments between ports to which the two workstations are attached. They are

appropriate for small to large LANs with moderate to heavy traffic.

In addition to the physical and data link connections, which are Layers 1 and 2, the computers must

also be configured with the correct IP network settings, which is Layer 3, so that they can

communicate. Since this lab uses a switch, a basic Category 5/5e UTP straight-through cable is

needed to connect each PC to the switch. This is referred to as a patch cable or horizontal cabling,

which is used to connect workstations and a typical LAN. Start this lab with the equipment turned off

and with cabling disconnected. Work in teams of two with one person per PC. The following resources will be required:

• Two workstations with an Ethernet 10/100 NIC installed

• Ethernet 10BaseT or Fast Ethernet switch

• Several Ethernet cables, which are straight-through and crossover, to choose from for

connecting the two workstations

Step 1 Identify the proper Ethernet cable and connect the two PCs to the switch

a. The connection between the two PCs and the switch will be accomplished using a Category 5 or

5e straight-through patch cable. Locate two cables that are long enough to reach from each PC

to the switch. Attach one end to the NIC and the other end to a port on the switch. Be sure to

examine the cable ends carefully and select only a straight-through cable.

b. What kind of cable is required to connect from NIC to switch? Straight Through Cable

c. What is the category rating of the cable? Category 5 or 5e

d. What is the AWG wire size designation of the cable? 24 AWG

Step 2 Verify the physical connection

a. Plug in and turn on the computers. To verify the computer connections, insure that the link lights

on the both PC NICs and the switch interfaces are lit. Are all link lights lit? They should be, otherwise troubleshoot.

Step 3 Access the IP settings window

Note: Be sure to write down the existing IP settings, so that they can be restored at the end

of the lab. These include IP address, subnet mask, default gateway, and DNS servers. If the

workstation is a DHCP client, it is not necessary to record this information.

Windows 95 / 98 / Me/ users should do the following:

• Click on Start > Settings > Control Panel and then click the Network icon.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC and click on

Properties.

• Click on the IP Address tab and the Gateway tab.

Windows NT / 2000 users should do the following:

• Click on Start > Settings > Control Panel and then open the Network and Dial-up

Connections folder.

• Click and open the Local Area Connection icon.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Windows XP users should do the following:

• Click on Start > Settings > Control Panel and then click the Network Connection icon.

• Select the Local Area Network Connection and click on Change settings of this connection.

• Select the TCP/IP protocol icon that is associated with the NIC on this PC.

• Click on Properties and click on Use the following IP address.

Windows 7 users should do the following:

• Click on Start > Control Panel
> Network and Internet
and then click the Network and Sharing Center.

• Select the Change Adapter Settings in the right and click the Local Area Connection Icon and Click on Properties.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Step 4 Configure TCP/IP settings for the two PCs

a. Set the IP address information for each PC according to the information in the table.

b. Note that the default gateway IP address is not required, since these computers are directly

connected. The default gateway is only required on local area networks that are connected to a

router.

Computer IP Address Subnet mask Default Gateway

PC – A 192.168.108.9 255.255.255.0 Not Required

PC – B 192.168.108.1 255.255.255.0 Not Required

Step 5 Access the Command or MS-DOS prompt

a. Use the Start menu to open the Command Prompt (MS-DOS-like) window:

Windows 95/98/Me users should do the following:

Start > Programs > MS-DOS Prompt

Windows NT/2000 users should do the following:

Start > Programs > Accessories > Command Prompt

Windows XP users should do the following:

Start > Programs > Accessories > Command Prompt

Windows 7 users should do the following:

Start > All Programs > Accessories > Command Prompt

Step 6 Verify that the PCs can communicate

a. Test connectivity from one PC to the other through the hub by pinging the IP address of the

opposite computer. Use the following command at the command prompt.

C:>ping 192.168.108.1 (or 192.168.108.9)

b. Look for results similar to those shown below. If not, check the PC connections and TCP/IP

settings for both PCs. What was the ping result?

Step 7 Confirm the TCP/IP network settings

Windows 95 / 98 / Me users should do the following:

a. Type the winipcfg command from the MS-DOS Prompt. Record the results.

__________________________________________________________________________

Windows NT / 2000 / XP users should do the following:

b. Type the ipconfig command from the Command Prompt. Record the results.

__________________________________________________________________________

Windows 7 XP users should do the following:

c. Type the ipconfig command from the Command Prompt. Record the results.

IP Address......................: 192.168.108.9

Subnet Mask.....................: 255.255.255.0

Default Gateway.................: 0.0.0.0

Step 8 Restore the PCs to their original IP settings, disconnect the equipment, and store the cables

Tugas Jarkom 2

Joanna Herpiani (11108079), 3ka15

Building a Hub-based Network

Background / Preparation

This lab focuses on the ability to connect two PCs to create a simple hub-based Ethernet LAN using

two workstations. A hub is a networking concentration device sometimes referred to as a multiport

repeater. Hubs are inexpensive and easy to install, but they permit collisions to occur. They are

appropriate for a small LAN with light traffic.

In addition to the physical and data link connections, which are Layers 1 and 2, the computers must

also be configured with the correct IP network settings, which is Layer 3, so that they can

communicate. Since this lab uses a hub, a basic Category 5/5e UTP straight-through cable is

needed to connect each PC to the hub. This is referred to as a patch cable or horizontal cabling,

which is used to connect workstations and a typical LAN. Start this lab with the equipment turned off

and with cabling disconnected. Work in teams of two with one person per PC. The following

resources will be required:

• Two workstations with an Ethernet 10/100 NIC installed

• Ethernet 10BaseT or Fast Ethernet hub

• Several Ethernet cables, which are straight-through and crossover, to choose from for

connecting the two workstations

Step 1 Identify the proper Ethernet cable and connect the two PCs to the hub

a. The connection between the two PCs and the hub will be accomplished using a Category 5 or 5e

straight-through patch cable. Locate two cables that are long enough to reach from each PC to

the hub. Attach one end to the NIC and the other end to a port on the hub. Be sure to examine

the cable ends carefully and select only a straight-through cable.

b. What kind of cable is required to connect from NIC to hub? Straight Through Cable

c. What is the category rating of the cable?
Category 5 or 5e

d. What is the AWG wire size designation of the cable?
24 AWG

Step 2 Verify the physical connection

a. Plug in and turn on the computers. To verify the computer connections, insure that the link lights

on the both PC NICs and the hub interfaces are lit. Are all link lights lit?
They should be, otherwise troubleshoot.

Step 3 Access the IP settings window

Note: Be sure to write down the existing IP settings, so that they can be restored at the end

of the lab. These include IP address, subnet mask, default gateway, and DNS servers. If the

workstation is a DHCP client, it is not necessary to record this information.

Windows 95/98/Me users should do the following:

• Click on Start > Settings > Control Panel and then click the Network icon.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC and click on

Properties.

• Click on the IP Address tab and the Gateway tab.

Windows NT/2000 users should do the following:

• Click on Start > Settings > Control Panel and then open the Network and Dial-up

Connections folder.

• Click and open the Local Area Connection icon.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Windows XP users should do the following:

• Click on Start > Settings > Control Panel and then click the Network Connection icon.

• Select the Local Area Network Connection and click on Change settings of this connection.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Windows 7 users should do the following:

• Click on Start > Control Panel
> Network and Internet
and then click the Network and Sharing Center.

• Select the Change Adapter Settings in the right and click the Local Area Connection Icon and Click on Properties.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Step 4 Configure TCP/IP settings for the two PCs

a. Set the IP address information for each PC according to the information in the table.

b. Note that the default gateway IP address is not required, since these computers are directly

connected. The default gateway is only required on local area networks that are connected to a

router.

Computer IP Address Subnet mask Default Gateway

PC – A 192.168.108.9 255.255.255.0 Not Required

PC – B 192.168.108.1 255.255.255.0 Not Required

Step 5 Access the Command or MS-DOS prompt

a. Use the Start menu to open the Command Prompt (MS-DOS-like) window:

Windows 95/98/Me users should do the following:

Start > Programs > MS-DOS Prompt

Windows NT/2000 users should do the following:

Start > Programs > Accessories > Command Prompt

Windows XP users should do the following:

Start > Programs > Accessories > Command Prompt

Windows 7 users should do the following:

Start > All Programs > Accessories > Command Prompt

Step 6 Verify that the PCs can communicate

a. Test connectivity from one PC to the other through the hub by pinging the IP address of the

opposite computer. Use the following command at the command prompt.

C:>ping 192.168.108.1 (or 192.168.108.9)

b. Look for results similar to those shown below. If not, check the PC connections and TCP/IP

settings for both PCs. What was the ping result?

Step 7 Confirm the TCP/IP network settings

Windows 95 / 98 / Me users should do the following:

a. Type the winipcfg command from the MS-DOS Prompt. Record the results.

__________________________________________________________________________

Windows NT / 2000 / XP users should do the following:

b. Type the ipconfig command from the Command Prompt. Record the results.

__________________________________________________________________________

Windows 7 XP users should do the following:

c. Type the ipconfig command from the Command Prompt. Record the results.

IP Address......................: 192.168.108.9

Subnet Mask.....................: 255.255.255.0

Default Gateway.................: 0.0.0.0

Step 8 Restore the PCs to their original IP settings, disconnect the equipment, and store the cables

Tugas Jarkom 1

Joanna Herpiani (11108079), 3ka15

Building a Peer-to-Peer Network – Instructor Version

Background / Preparation

This lab focuses on the ability to connect two PC

s to create a simple peer-to-peer Ethernet LAN

between two workstations. The workstations will be directly connected to each other without using a

hub or switch. In addition to the Layer 1 physical and Layer 2 data link connections, the computers

must also be configured with the correct IP network settings, which is Layer 3, so that they can

communicate. A basic Category 5/5e UTP crossover cable is all that is needed. A crossover cable is

the same type that would be used as backbone or vertical cabling to connect switches together.

Connecting the PCs in this manner can be very useful for transferring files at high speed and for

troubleshooting interconnecting devices between PCs. If the two PCs can be connected with a single

cable and are able to communicate, then any networking problems are not with the PCs themselves.

Start this lab with the equipment turned off and with cabling disconnected. Work in tea

ms of two with

one person per PC. The following resources will be required:

• Two workstations with an Ethernet 10/100 NIC installed

• Several Ethernet cables, which are both straight-through and crossover, to choose from for

connecting the two workstations

Step 1 Identify the proper Ethernet cable and connect the two PCs

a. The connection between the two PCs will be accomplished using a Category 5 or 5e crossover

cable. Locate a cable that is long enough to reach from one PC to the other, and attach one end

to the NIC in each of the PCs. Be sure to examine the cable ends carefully and select only a

crossover cable.

b. What kind of cable is required to connect from NIC to NIC? Crossover

c. What is the category rating of the cable? Category 5 or 5e

d. What is the AWG wire size designation of the cable? 24 AWG

Step 2 Verify the physical connection

a. Plug in and turn on the computers. To verify the computer connections, insure that the link lights

on both NICs are lit. Are both link lights lit? They should be otherwise troubleshoot.

Step 3 Access the IP settings window

Note: Be sure to write down the existing IP settings, so that they can be restored at the end

of the lab. These include IP address, subnet mask, default gateway, and DNS servers. If the

workstation is a DHCP client, it is not necessary to record this information.

Windows 95 / 98 / Me/ users should do the following:

• Click on Start > Settings > Control Panel and then click the Network icon.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC and click on

Properties.

• Click on the IP Address tab and the Gateway tab.

Windows NT / 2000 users should do the following:

• Click on Start > Settings > Control Panel and then open the Network and Dial-up

Connections folder.

• Click ad open the Local Area Connection icon.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Windows XP users should do the following:

• Click on Start > Settings > Control Panel and then click the Network Connection icon.

• Select the Local Area Network Connection and click on Change settings of this connection.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Windows 7 users should do the following:

• Click on Start > Control Panel > Network and Internet and then click the Network and Sharing Center.

• Select the Change Adapter Settings in the right and click the Local Area Connection Icon and click on Properties.

• Select the TCP/IP protocol icon that is associated with the NIC in this PC.

• Click on Properties and click on Use the following IP address.

Step 4 Configure TCP/IP settings for the two PCs

a. Set the IP address information for each PC according to the information in the table.

b. Note that the default gateway IP address is not required, since these computers are directly

connected. The default gateway is only required on local area networks that are connected to a

router.

Computer IP Address Subnet mask Default Gateway

PC – A 192.168.108.9 255.255.255.0 Not Required

PC – B 192.168.108.1 255.255.255.0 Not Required

Step 5 Access the Command or MS-DOS prompt

a. Use the Start menu to open the Command Prompt (MS-DOS-like) window:

Windows 95 / 98 / Me users should do the following:

Start > Programs > MS-DOS Prompt

Windows NT / 2000 users should do the following:

Start > Programs > Accessories > Command Prompt

Windows XP users should do the following:

Start > Programs > Accessories > Command Prompt

Windows 7 users should do the following:

Start >All
Programs > Accessories > Command Prompt

Step 6 Verify that the PCs can communicate

a. Test connectivity from one PC to the other by pinging the IP address of the opposite computer.

Use the following command at the command prompt.

C:>ping 192.168.108.1 (or 192.168.108.9)

b. Look for results similar to those shown below. If not, check the PC connections and TCP/IP

settings for both PCs. What was the ping result?

Results could possibly be: Sent=4 Received=3 Lost=1 (this is due to ARP)

Any other results probably indicate an error

Step 7 Confirm the TCP/IP network settings

Windows 95 / 98 / Me users should do the following:

a. Type the winipcfg command from the MS-DOS Prompt. Record the results:

Answers will vary depending on if Computer A or B is used.

Examples for Computer A

IP Address: 192.168.1.1

Subnet Mask: 255.255.255.0

Default Gateway:

Windows NT / 2000 / XP users should do the following:

b. Type the ipconfig command from the Command Prompt. Record the results:

Answers will vary depending on if Computer A or B is used.

Examples for Computer B

IP Address: 192.168.1.2

Subnet Mask: 255.255.255.0

Default Gateway:

Step 8 Restore the PCs to their original IP settings, disconnect the equipment, and store the cables

Resensi Buku

Judul Buku : Kisah Tragis Oei Hui Lan Putri Orang Terkaya Di Indonesia.

Nama Pengarang : Agnes Davonar

Tahun Terbit : 2009

Nama Penerbit : INTIBOOK

Tempat Terbit : Jakarta

Buku ini menceritakan tentang kisah kehidupan Oei Hui Lan. Kisah kehidupannya yang mewah dan dikelilingi orang-orang yang sangat berpengaruh, menjadikannya bak putri dalam dongeng. Oei Hui Lan adalah putri dari seorang pria terkaya se-Asia Tenggara yang bernama Oei Tiong Ham, pada zaman penjajahan Belanda di Indonesia. Ayahnya juga dijuluki sebagai Raja Gula dari Semarang. Dan suaminya, Wellington Koo adalah seorang politikus handal yang sangat berpengaruh bagi negeri Cina dan ikut berperan dalam pembentukan Perserikatan Bangsa Bangsa. Ayahnya-lah yang membuat dirinya dapat mengenal dunia dengan kemewahan yang diberikan padanya, sedangkan suaminya membuat ia mengenal dunia sesungguhnya. Sang ibu yang sangat ambisius membuatnya jadi orang yang terpandang didunia dan kakak yang selalu membuat nya tersakiti hatinya.Dibalik semua hal tersebut banyak sekali kisah yang penuh dengan intrik dan tragedi. Dimulai dari ayahnya yang mulai berpoligami dan memperbanyak gundik (istri tidak sah), kehidupan dalam keluarganya, hubungannya dengan orang lain sampai dengan warisan ayahnya yang diperebutkan oleh keempat puluh dua saudara tirinya.

Isi dari buku ini dikemas dalam bentuk kisah yang menarik, walaupun kisah ini sendiri diambil dari cerita true story. Penyajiannya dan bahasa yang digunakan dapat membawa para pembaca menyelami perasaan Oei Hui Lan. Tetapi sayangnya penulis hanya menuliskan kisah ini dari satu sudut pandang yaitu Oei Hui Lan sendiri, sehingga kita dapat mengetahui apa yang sebenarnya terjadi jika dilihat dari sudut pandang yang lain. Buku ini juga dilengkapi dengan foto-foto Oei Hui Lan yang membantu pembaca untuk mewujudkan bayangan yang ada pada pikiran mereka, tetapi jika lebih baik lagi jika foto-foto tersebut disusun berdasarkan waktu atau sesuai cerita yang bersangkutan dengan foto-foto tersebut.

Dari buku ini pembaca dapat memetik hikmah bahwa kekuasaan dan kekayaan bukanlah sesuatu yang abadi dan dapat memberikan kebahagiaan yang sesungguhnya. Tetapi hanya cinta dan kasih saying dari orang yang kita kasihi yang dapat memberikan kita kebahagiaan sesungguhnya dan mengajari kita apa arti hidup yang sebenarnya. Dan itulah yang dirasakan Oei Hui Lan pada akhir hayat hidupnya saat ia merenungi kembali refleksi kehidupannya. (Joanna Herpiani, 11108079, 3KA15)

Laporan Kegiatan

Nama kegiatan yang diikuti :

Improving Effective Presentation

Waktu dan tempat pelaksanaan :

20 Februari 2009. Kampus D, Jl. Margonda Raya 100, Universitas Gunadarma

Jenis kegiatan yang diikuti :

Workshop Pengembangan Kemampuan Presentasi

Tujuan dari kegiatan yang diikuti :

Untuk mengembangkan kemampuan peserta dalam bidang presentasi dan penggunaan media presentasi secara efektif .

Jumlah peserta kegiatan :

30 peserta.

Keterangan :

Workshop dilaksanakan selama 1(satu) hari dari pukul 09.00 WIB, tetapi peserta diwajibkan hadir 15 menit sebelum workshop dimulai. Setiap peserta akan mendapatkan fasilitas berupa modul dan sebuah computer yang akan digunakan selama workshop. Akan ada beberapa pengajar yang akan membantu dan menjelaskan materi-materi yang ada dimodul serta memberi penilaian pada peserta. Pada pukul 12.00 WIB sampai 13.00 WIB peserta dipersilahkan untuk beristirahat sejenak, sebelum dilanjutkan sampai 16.00 WIB. Peserta dapat melihat hasil kelulusan workshop dan mengambil sertifikat setelah 1(satu) bulan dari tanggal pelaksanaan workshop.

Contoh Teks Pidato

Selamat pagi dan salam sejahtera .

Pertama-tama marilah kita panjatkan puji syukur kehadirat Tuhan yang maha esa yang telah melimpahkan rahmatnya kepada kita semua, sehingga pada hari ini kita dapat berkumpul di kelas ini, dalam keadaan sehat wal’afiat.

Suatu penghargaan tersendiri bagi saya, selaku murid kelas XII IPA 2 dapat menyampaikan pidato bagaimana menanggulangi sampah.

Teman-teman dan Ibu guru Anita yang berbahagia sampah menjadi masalah yang serius. Bahkan di wilayah yang seharusnya belum menjadi masalah pun telah menjadi masalah. Mengapa? Karena sampah tidak dikelola dengan baik, dan yang lebih serius lagi adalah ketika sampah itu bercampur aduk dengan sampah-sampah yang lain sehingga menjadi tidak karuan, ada sampah daun dan sayur, kertas, plastik, seng, besi, aluminium, jarum suntik, obat-obatan, baterai, dan lain-lain. Satu dengan lain akan bereaksi dan membentuk senyawa yang lebih berbahaya lagi dan bisa menimbulkan dampak penyakit yang membahayakan bagi kita semua.

Untuk mengurangi resiko tersebut tentang pengelolaan sampah, maka pemilahan sampah menjadi sesuatu yang harus segera dilaksanakan oleh masyarakat pada semua aktivitas. Pemilahan juga memudahkan penanganan sampah. Misalnya, sampah organik dapat kita olah menjadi kompos, atau bentuk lainnya.

Jadi, pengelolaan sampah tidak cukup hanya dilakukan dengan manajemen 3P (Pengumpulan, Pengangkutan dan Penimbunan di TPA). Sampah dikumpulkan dari sumbernya kemudian diangkut ke TPS dan terakhir ditimbun di TPA. Adanya upaya bersama dalam melestarikan lingkungan ini merupakan suatu proses pengurangan sampah dengan mengolah sampah menjadi produk yang berguna perlu dipertahankan dan dipraktekkan.

Usaha sadar dalam mengatasi permasalahan lingkungan kebersihan ini selain diperlukan penangganan instansi terkait juga diperlukan peran yang cukup besar dari elemen lapisan masyarakat di seluruh Indonesia.

Teman-teman XII ipa 2 dan Ibu guru Anita yang saya hormati, Suatu kota yang bersih akan menjadi kesukaan semua orang apalagi para wisatawan. Dengan adanya kesadaran yang tinggi dalam pelestarian lingkungan ini, melalui upaya bersama masyarakat, Kita dibiasakan untuk membuang sampah pada tempatnya. Agar para wisatawan pun senang berada di dalam Negara kita dan itu bisa membuat hubungan Negara kita dengan Negara orang lain menjadi lebih baik karena kita memiliki pelayanan dan lingkungan yang baik.

Pemeliharaan dan pengelolaan lingkungan secara sehat dan bermanfaat ini merupakan hal yang dianjurkan untuk kita semua masyarakat serta untuk tidak menutup mata bahwa sebenarnya masih ditemukan kurangnya ketersediaan sarana dan prasarana dalam mengatasi permasalahan sampah tersebut, namun penyebab utama bukan karena ketersediaan fasilitas yang tidak ada tetapi oleh sebab masih sedikitnya kesadaran masyarakat atas keperdulian melestarikan lingkungan disekitarnya.

Secara perlahan dan pasti bersama – sama kita bisa mengurangi jumlah sampah yang begitu banyak dan kita bisa menanganinya. untuk mengatasi permasalahan tersebut, sudah saatnya kita secara bersama mengubah pola pikir yang lebih bernuansa lingkungan, secara terpadu dengan meminimisasi sampah serta maksimasi daur ulang dan pengomposan disertai TPA yang ramah lingkungan. Energi baru yang dihasilkan dari hasil penguraian sampah maupun proses daur ulang dapat dimanfaatkan seoptimal mungkin.

Upaya kebersihan lingkungan yang berbasis masyarakat ini, mengacu pada slogan yang berlaku umum, yaitu 3R: reduce (mengurangi), reuse (pemakaian kembali), dan recycle (daur ulang). Program 3R ini hanya dapat terwujud dengan baik jika disadari sebagai tanggung jawab bersama baik antara pemerintah dengan masyarakat.

Ini berarti pembiasaan dan pendisiplinan untuk membereskan sampah yang dimulai dari tingkat lingkungan rumah sendiri. Masyarakat bertanggung jawab terhadap pengelolaan sampah di lingkungan mereka sendiri. Tak hanya membuang sampah pada tempatnya, tetapi juga mengolah habis sampah hingga tuntas.

Jika pengolahan sampah - sampah dilakukan dengan baik, sampah bukanlah merupakan sebuah masalah karena pengolahan sampah bisa dilakukan dengan relatif aman. Bahkan di beberapa Negara maju, sampah bisa menjadi sumber uang yang cukup potensial. Di beberapa negara yang pengolahan sampahnya baik.

Para hadirin yang berbahagia, sebelum mengakhiri pidato ini, saya mengajak sekaligus menghimbau kepada seluruh siswa Cita hati dan Bapak Ibu guru berkerja sama dalam meningkatkan kesadaran demi mewujudkan lingkungan hidup yang bersih dan sehat, terutama bagi masa depan anak cucu kita nantinya.

Demikianlah kiranya beberapa hal yang dapat disampaikan. Tuhan memberkati.

Sekian dan terima kasih

Subnetting Kelas C

Postingan saya kali ini mengenai subnetting, yang akan dilakukan pada class C dimana IP publiknya 192.168.1.0.Kemudian akan dilakukan subnetting dengan membaginya pada 5 network. Berikut ini adalah langkah-langkah yang akan kita lakukan untuk membuat subnetting:

• Pertama-tama kita menentukan subnet mask dari class C, kemudian mengubahnya kedalam bentuk biner.
  

• Lalu untuk menentukan subnet mask id dari host IP, kita dapat meminjam digit dari host IP
• Dalam menentukan jumlah subnetwork, dapat menggunakan rumus POWER OF TWO yaitu 2 ⁿ – 2 = jumlah subnetwork
• Perhitungan subnetworknya adalah sebagi berikut :

2ⁿ – 2 = 5

2ⁿ = 5 + 2

2ⁿ = 7

2²<2ⁿ<2³

n = 3

• Angka 3 tersebut menunjukkan nilai digit yang dipinjam dari host_id.
• Kemudian kita tuliskan lagi subnet mask dari kelas dengan nilai binernya yang kita urutkan berdasarkan perhitungan subnetwork yang telah kita lakukan. Untuk host kita ambil 3 digit dari belakang karena nilai digit yang kita pinjam dari host_id berjumlah 3 digit.

• Untuk melihat broadcast_id, kita lihat angka decimal subnet berikutnya dikurang 1. Id awal merupakan subnet_id sedangkan Id akhir merupakan broadcast_id.

• Lalu untuk valid host dapat diambil diantara subnet id dan broadcast id. Untuk lebih jelasnya dapat dilihat pada gambar dibawah ini.

• Desain networknya akan menjadi seperti ini :